• 한국경제지리학회지
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• 제3권2호
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• pp.5-22
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• 2000

전북의 제조업은 낮은 수준에도 불구하고 지난 20여년 동안 꾸준히 발달하고 있다. 전통적으로 이 지역의 중심산업 이었던 노동집약형 업종들의 중요도가 점차로 감소하고 자동차, 화학제품, 통신장비, 기타기계 등 새로운 업종들의 성장이 두드러지게 높아지고 있다. 업종별 다양성의 증가를 동반하는 이러한 구조적 변화의 특성은 국가의 산업구조조정 정책 방향과 일치하고 있으나 아직은 구조 전환의 속도가 느려 결국 수준에 미치고 못하고 있다. 특히 자본집약형의 비중이 아직도 전국 평균에 미치지 못하고 있으며, 첨단기술산업의 발달은 미약한 실정이다. 구조적 변화와 더불어 전북 제조업의 공간적 구조도 새로운 양상을 보이고 있다. 이 지역의 중심 도시인 전주, 익산, 군산 지역이 전북제조업을 여전히 주도하고 있지만, 이 중심지역 내에서 제조업 이심화가 분명히 나타나고 있으며, 중심에 인접한 김제와 정읍 지역에 새로운 외부투자가 증가하여 분산화 현상도 보여지고 있다. 그러나 아직도 전북의 제조업 공간구조는 지역 내에서도 격차가 극히 심하여 중심지역을 제외한 대부분의 지역에서 제조업 발달은 극히 부진한 실정이다.

• 한국생산제조학회지
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• 제22권4호
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• pp.700-707
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• 2013

Owing to high oil prices and environmental issues, the automobile industry has conducted considerable research and made large investments to manufacture a high-efficiency automobiles. In the case of automobile wheels in which a lightweight material is used to increase the fuel efficiency a mold is used to increase the production efficiency; however, the use of the molding method for this purpose is very expensive. Therefore an automobile wheel consists of two parts. In this study a two-piece automobile wheel is manufactured by the friction stir welding(FSW) of Al6061-T6 to reduce the manufacturing cost and process complexity. The FSW welding tool geometry and rotational speed, and the feed rate are key factors that significantly affect the weld strength. Therefore tensile tests were conducted on specimens produced using various welding conditions, and the optimal FSW welding conditions were applied to manufacture aluminum wheels. To ensure reliability, prototype aluminum wheels were manufactured and their mechanical reliability and safety were evaluated using a durability test, fatigue durability test, and impact test. Through this study, aluminum wheel production was made possible using the FSW method.

• 자원리싸이클링
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• 제19권1호
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• pp.13-20
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• 2010

콘크리트 제조시 많은 에너지가 소모되며 특히 결합재인 시멘트는 제조과정에서 다량의 $CO_2$를 배출하기 때문에 이러한 부정적인 인식을 해소하기 위한 노력이 진행되고 있으며, 최근 들어 환경 친화적인 에코 콘크리트의 제조 및 적용에 대한 관심이 높아가고 있다. 에코 콘크리트는 환경부하의 저감, 산업폐기물의 활용 및 환경관련 성능의 향상 등 다양한 접근 방법이 있으며 이러한 방법들이 국내에 정착하기 위해서는 지속가능한 개발로 친환경 성능이 개선된 콘크리트의 제조에 관한 연구가 필요한 실정이다. 본 연구에서는 콘크리트용 시멘트 및 골재를 천연재료인 메타카올린 및 산업부산물인 동슬래그로 대체 활용한 환경 부하 저감 목적의 에코형 혼합콘크리트를 제작한 후 각 종 시험결과를 통하여 그 활용 가능성을 고찰하였다.

• 한국경제지리학회지
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• 제6권2호
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• pp.307-326
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• 2003

한국에서 국가가 산업발전의 중요한 역할을 하면서 산업단지의 입지와 발전은 경제적 요인에 만이 아니라 정치$.$사회적 요인에 의해 결정되어 왔다. 전라북도 산업단지의 입지 역시 단지 내에 입주할 기업의 결정이 아니라 국가의 투자전략에 의해 결정되었다. 공업화 초기 단계에는 산업기반시설과 해외 수출 시장에의 접근성에서 수도권과 남동 지역에 비해 상대적으로 열악한 전라북도는 대단위 주요 산업단지의 입지 지역에서 제외되면서 국가공업체계의 주변지역으로 남게 되었다. 1980년대 지역간 불균형을 해소하기 위한 공간정책이 시행되면서 전북의 산업단지 발달이 급속히 진행 되었다. 산업단지 개발이 본격화 되면서 전북의 산업단지는 지역 제조업 발달을 선도하면서 지역경제의 구조 변화는 물론 제조업의 구조 변화에도 크게 기여하였다. 특히 제조업 내에서 상대적으로 높은 기술을 요하는 부문의 발달을 유도하여 전북의 제조업 고도화를 주도하고 있다. 대단위 산업단지의 발달은 전북 제조업의 공간적 패턴에 크게 영향을 주면서, 지역의 중심인 전주, 익산, 군산 세 도시에 집중되어 분포하고 있다. 이들 세 지역의 인접성을 감안할 때, 이곳에 입지한 산업단지는 지역 내의 네트워크 형성에 유리하여 전북 제조업 발달에 크게 기여할 것으로 기대된다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
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• pp.1101-1107
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• 2005

Mold industry has the difficulty to employ young people as the successors of the skilled workers, because it has been regarded as a 3D-jobs(dirty, difficult, and dangerous). To overcome this situation, thus, manufacturing technologies maintained in the factory should be systemized, and engineering systems should support unskilled workers to do their jobs without any difficulty. As a research of developing the supporting system, this study proposes a decision support system that facilitates unskilled workers to easily select high quality NC-data, as well as to increase productivity. The proposed system is assumed to follow a CAM operation scenario that consists of next three steps: 1) identifying several process plans and enumerating feasible unit machining operations (UMOs) from material and part surface information, 2) creating all feasible NC-data based on UMOs using a commercial CAM system, 3) selecting the best NC data among the feasible NC data using four screening criteria, such as machining accuracy, machining allowance, cutting load, and processing time. A case study on the machining of a camera core mold is provided to demonstrate the proposed system.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2014년도 전력전자학술대회 논문집
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• pp.383-384
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• 2014

This paper investigates the experimental and simulated time-varying magnetic field generation in a chlor-alkali manufacturing process. 19kA thyristor-based rectifier is modeled and analyzed. The performance is compared and evaluated on the basis of exposure guidelines from ICNIRP. The mechanical structure of current carrying conductor is simplified as an infinite long busbar model and low frequency harmonic contents up to 65kHz are considered. Thyristor rectifier generates a significant amount of low frequency magnetic field harmonic contents both at ac and dc busbar of rectifier infringing the limit of ICNIRP. Along with simulation analysis the experimental measurement of the time-varying magnetic field in ac input busbar, rectifier block, dc load and busbar are presented. The experimental test results partly confirm the simulation results.

• 품질경영학회지
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• 제15권1호
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• pp.33-46
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• 1987

The present survey was made through mail questionaires aiming at understanding the conditions of quality control, finding problems and making improvement for manufacturing companies located in the Chonbuk area. The conditions of quality control were compared between KS marking companies and non KS marking companies regardless of manufactured products. The main check points were the function of process control, the function of quality assurance, the function of quality survey, the function of quality system, quality education, quality training, the function of QC circle and general functions excepting the scale of enterprise.

• 반도체디스플레이기술학회지
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• 제12권3호
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• pp.19-22
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• 2013

The purpose of this study is to develop a system that can monitor the amounts of energy consumption during CVD and etching process for semiconductor manufacturing. Specifically, this system is designed to measure the $CO_2$ emission amounts quantitatively by measuring the flow rate of gas used and amount of power consumed during the processes. The processes of CVD equipment can be classified generally into processing step and cleaning step and all the two steps were monitored. In CVD and etcher equipments, various gases including Ar and $O_2$ are used, but Ar, $O_2$ and He were monitored with the use of the LCI data of Korea Environmental Industry & Technology Institute and carbon emission coefficients of EcoInvent. As a result, it was found that the carbon emission amounts of CVD equipment for Ar, $O_2$ and He were $0.030kgCO_2/min$, $4.580{\times}10^{-3}kgCO_2/min$ and $6.817{\times}10^{-4}kgCO_2/min$, respectively and those of etcher equipment for Ar and $O_2$ are $5.111{\times}10^{-3}kgCO_2/min$ and $7.172kgCO_2/min$, respectively.

• 한국의류산업학회지
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• 제19권1호
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• pp.79-89
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• 2017

Sensory attributes and preferences that contribute to consumer satisfaction with artificial leather were measured by subjective evaluation, and subjective hand and preferences were analyzed in relation to its use. Using tactile and visual senses, 50 experts in fashion and textile industry evaluated leathers classified into two categories, suede and polyurethane coated, according to different manufacturing methods. They answered questions on subjective hand and preferences of different artificial leathers of various fashion items (jackets, purses, bags, shoes, boots, furniture, etc.), using specific adjectives to describe the hand properties. As a result, it was found that the subjective hand properties of artificial leathers were related to 'Thickness', 'Fullness/softness', 'Surface contour', 'Stickiness', and 'Elasticity'. The leather type from different manufacturing methods influenced their perceived hand and preferences relating to use. By use, different hands were preferred. The preferences for jackets and furniture of suede type leathers were related to their surface properties, whereas the preferences for items of the other type of leathers were associated with their resilience. On the other hand, in the case of polyurethane coated leathers, the preferences for jackets were significantly affected by their thickness, while those for the other items were influenced by their resilience and surface properties.

• 펄프종이기술
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• 제41권4호
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• pp.58-64
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• 2009

This study was carried out to prepare high porosity pulp for oil and air filter media from commercial grade NBKP with 6 - 20% NaOH treatment. The fiber width of NBKP remarkably decreased by NaOH pretreatment. The air permeability of the test sheet prepared from alkali-pretreated NBKP increased with increasing NaOH concentration up to 15%. The burst factor was greatly decreased by alkali pretreatment. By 15 - 20% NaOH pretreatment of NBKP, it could be possible to prepare a high porosity pulp. It seems that the high porosity of the pulp was due to a strong swelling and a great change of the cellulose crystalline lattice from cellulose I to cellulose II with NaOH treatment of NBKP. The study suggested that alkali- pretreated NBKP could be used for manufacturing oil and air filter media.